问题
计算题
计算:
(1)15x+4x﹣10x;
(2)﹣p2﹣p2﹣p2;
(3)x2y﹣3xy2+2yx2﹣y2x.
答案
解:(1)15x+4x﹣10x=19x﹣10x=9x;
(2)﹣p2﹣p2﹣p2=﹣3p2;
(3)x2y﹣3xy2+2yx2﹣y2x=3x2y﹣4xy2.
计算:
(1)15x+4x﹣10x;
(2)﹣p2﹣p2﹣p2;
(3)x2y﹣3xy2+2yx2﹣y2x.
解:(1)15x+4x﹣10x=19x﹣10x=9x;
(2)﹣p2﹣p2﹣p2=﹣3p2;
(3)x2y﹣3xy2+2yx2﹣y2x=3x2y﹣4xy2.